react-navigation DrawerNavigator抽屉问题

react-navigation 使用DrawerNavigator时在任意页面都能滑出抽屉 这是不合理的 解决方法如下

const Navigator = StackNavigator(
  {
      Tab: { screen: Tab,navigationOptions:{ drawerLockMode:'unlocked',} }, //需要滑出抽屉的页面
       ...
  {
    navigationOptions: {
        ...
        drawerLockMode:'locked-closed',  //here 锁住抽屉
     
    },
);

打开抽屉方法

v1 this.props.navigation.navigate('DrawerOpen');
v2 this.props.navigation.openDrawer();

FeedStack.navigationOptions = ({ navigation }) => {
  let drawerLockMode = 'unlocked';
  if (navigation.state.index > 0) {
    drawerLockMode = 'locked-closed';
  }

  return {
    drawerLockMode,
  };
};